Finding the Fourth Proportional to 1,081,115.68, 1,491,692.10 and 645,448.23
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Solution
The fourth proportional to 1,081,115.68, 1,491,692.10 and 645,448.23 is: 890,570.77
Step by Step Solution
- Step 1: Write the proportion equation
1,081,115.68 : 1,491,692.10 = 645,448.23 : x - Step 2: Convert to fraction form
1,081,115.68/1,491,692.10 = 645,448.23/x - Step 3: Cross multiply
1,081,115.68x = 1,491,692.10 × 645,448.23 - Step 4: Simplify right side
1,081,115.68x = 962,810,025,649.98 - Step 5: Solve for x
x = 962,810,025,649.98/1,081,115.68 - Step 6: Final answer
x = 890,570.77
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.